package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.beans.beancontext.BeanContext;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {

    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void autoFillPointCut(){}

    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint){
        log.info("执行update或者insert时的aop方法");

        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();
        //通过注解判断该方法是新增还是修改
        AutoFill annotation = method.getAnnotation(AutoFill.class);
        OperationType operationType = annotation.value();
        Object[] args = joinPoint.getArgs();
        if(null == args || args.length == 0){
            return;
        }

        //对新增时间与修改时间赋值
        Object arg = args[0];
        try {
            if(operationType == OperationType.INSERT){
                Method setCreateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setCreateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                setCreateTime.invoke(arg, LocalDateTime.now());
                setCreateUser.invoke(arg, BaseContext.getCurrentId());
            }else{
                Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);
                Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                setUpdateTime.invoke(arg, LocalDateTime.now());
                setUpdateUser.invoke(arg, BaseContext.getCurrentId());
            }
        }catch (Exception e){
            log.error("通过反射执行方法异常");
            e.printStackTrace();
        }
    }

}
